Re: New APIs to support multiple DLT_'s on an interface

[Andrew Brown <atatat () atatdot net>]

> > > since netbsd's -D and -L seem instrinsically related, yet the official
> > > tcpdump -D doesn't seem that far off, and since the netbsd change is
> > > rather recent, how about merging/switching the two functionalities?
> > > this would mean that -D would give me (for example):
> > >
> > >    % tcpdump -D
> > >    1.lo0   NULL
> > >    8.ep0   EN10MB
> > >    9.wi0   EN10MB IEEE802_11
> >
> > Yes, that might be a good idea, although that doesn't offer an option to
> > display just the link-layer types for one particular interface - I guess
> > we could allow "-i" and "-D" to be used together, and have that display
> > the link-layer types for the interface specified with "-i" (and maybe
> > leave out the interface number if that's done).
>
> It also doesn't help with the issue I was mentioning, which was that
> "-D" was already taken by WinPcap to mean "show a list of interfaces",
> and wasn't available for the NetBSD use meaning "set the DLT type for an
> interface".

i was suggesting that netbsd would switch the two: -D would should
interfaces and dlt types for each interface, and -L would select the
dlt type.  i also thought the numbers that tcpdump printed would be
the ifindex numbers, but that's not the case.

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